ft2232_spi.c: align with Chrome OS flashrom

Brings over various changes:
- Use DIS_DIV_5 constant
- Update some comments
- Wrap long lines

Signed-off-by: Nikolai Artemiev <nartemiev@google.com>
Change-Id: I24c20e9b5d7e661d0180699bbd0d1447f6bf816f
Reviewed-on: https://review.coreboot.org/c/flashrom/+/42796
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
1 file changed